Refrigerant pump testing method, device, equipment, storage medium and product

Abstract

The invention discloses a refrigerant pump testing method, device and equipment, a storage medium and a product, and relates to the technical field of refrigeration systems.The refrigerant pump testing method comprises the steps that in response to a test starting operation triggered by a user, refrigerant circulation under the corresponding working condition is conducted based on a refrigeration circulation component, and based on a core controller of the refrigerant pump testing equipment, refrigerant circulation under the corresponding working condition is conducted; and automatically acquiring the physical quantity corresponding to each refrigeration cycle component in the refrigerant cycle process, and determining the test result of the refrigerant pump test based on the physical quantity. According to the method, the parameters of the refrigerant pump are automatically adjusted based on the target parameters set on the touch screen, manual setting of refrigeration cycle working condition parameters is not needed, and in the refrigerant cycle process, all physical quantities are automatically obtained, and manual data collection is not needed. Therefore, through automatic parameter adjustment and physical quantity acquisition, comprehensive working condition simulation can be carried out when the refrigerant pump is tested.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigeration systems, and particularly relates to a refrigerant pump test method, device, equipment, storage medium and product. BACKGROUND

[0002] The development and production process of a refrigerant pump needs to test the performance and reliability of the pump, therefore, a refrigerant pump test device with data acquisition function is needed to test the performance and reliability of the pump under various working conditions. However, the current refrigerant pump test method usually adjusts the working condition and collects data in a manual manner, and can only simulate limited working conditions, resulting in incomplete simulation of the working condition of the refrigerant pump test. SUMMARY

[0003] The main purpose of the present application is to provide a refrigerant pump test method, device, equipment, storage medium and product, aiming at solving the technical problem of incomplete simulation of the working condition of the refrigerant pump test.

[0004] To achieve the above-mentioned purpose, the present application provides a refrigerant pump test method applied to a refrigerant pump test equipment, which comprises the following steps: In response to a test start operation triggered by a user, refrigerant circulation under a corresponding working condition is carried out based on refrigeration cycle components in the refrigerant pump test equipment, wherein the working condition of the refrigerant circulation is determined based on target working condition parameters of the refrigeration cycle components, and the target working condition parameters are determined based on target parameters set in a touch screen by the user; Based on a core controller of the refrigerant pump test equipment, physical quantities corresponding to each refrigeration cycle component during the refrigerant circulation process are automatically acquired; Based on the physical quantities, a test result of the refrigerant pump test is determined.

[0005] In an embodiment, the refrigeration cycle components include a heating tank, a condenser, a liquid storage tank, a refrigerant pump and a heater at the bottom of the heating tank, the target working condition parameters include a target heat load of the heating tank, a target fan speed of the condenser and a target pump speed of the refrigerant pump, and the step of carrying out refrigerant circulation under a corresponding working condition based on the refrigeration cycle components in the refrigerant pump test equipment in response to a test start operation triggered by a user comprises the following steps: In response to a test start operation triggered by a user, based on the heater, refrigerant is evaporated into gaseous refrigerant with the target heat load in the heating tank, and the gaseous refrigerant is delivered to the condenser; Based on the condenser with the target fan speed, the gaseous refrigerant is condensed into liquid refrigerant, and the liquid refrigerant is stored in the liquid storage tank; delivering the liquid refrigerant in the liquid tank to the heating tank to perform a refrigerant cycle under a corresponding working condition based on the target pump rotating speed of the refrigerant pump.

[0006] In an embodiment, the refrigerant pump test further comprises an automatic test, the steps of performing a refrigerant cycle under a corresponding working condition based on the refrigeration cycle components in the refrigerant pump test device in response to a user triggered test starting operation, further comprising: determining a minimum pump rotating speed, a maximum pump rotating speed, a pump rotating speed interval, a minimum head, a maximum head and a head interval of the automatic test in response to a user triggered automatic test operation; performing a refrigerant cycle under a corresponding working condition from the maximum pump rotating speed to the minimum pump rotating speed based on the minimum head, the maximum head, the head interval and the refrigeration cycle components, and automatically acquiring and saving corresponding physical quantities of each of the refrigeration cycle components during the refrigerant cycle based on the core controller, wherein the current pump rotating speed of the refrigerant pump is reduced based on the pump rotating speed interval after each saving of the physical quantities.

[0007] In an embodiment, the steps of performing a refrigerant cycle under a corresponding working condition from the maximum pump rotating speed to the minimum pump rotating speed based on the minimum head, the maximum head, the head interval and the refrigeration cycle components, and automatically acquiring and saving corresponding physical quantities of each of the refrigeration cycle components during the refrigerant cycle based on the core controller, further comprise: performing a refrigerant cycle under a corresponding working condition from the minimum head to the maximum head based on the current pump rotating speed and the refrigeration cycle components during each pump rotating speed test of the refrigerant pump, and automatically acquiring and saving corresponding physical quantities of each of the refrigeration cycle components during the refrigerant cycle based on the core controller, wherein the current head of the refrigerant pump is increased based on the head interval after each saving of the physical quantities.

[0008] In an embodiment, the physical quantities comprise an inlet pressure of the refrigerant pump, an outlet pressure of the refrigerant pump and a refrigerant pump flow, and the steps of determining a test result of the refrigerant pump test based on the physical quantities further comprise: calculating a corresponding refrigerant pump head based on the inlet pressure and the outlet pressure; determining a mapping relationship between the refrigerant pump head and the refrigerant pump flow at the target pump rotating speed; determining a test result of the refrigerant pump test based on the mapping relationship.

[0009] In addition, to achieve the above object, the present application also provides a refrigerant pump testing device, which comprises: a cycle simulation module, configured to perform refrigerant circulation under corresponding working conditions based on refrigeration cycle components in the refrigerant pump testing device in response to a test start operation triggered by a user, wherein the working conditions of the refrigerant circulation are determined based on target working condition parameters of the refrigeration cycle components, and the target working condition parameters are determined based on target parameters set in a touch screen by the user; a physical quantity acquisition module, configured to automatically acquire physical quantities corresponding to the refrigeration cycle components during the refrigerant circulation based on a core controller of the refrigerant pump testing device; a result determination module, configured to determine a test result of the refrigerant pump testing based on the physical quantities.

[0010] In addition, to achieve the above object, the present application also provides a refrigerant pump testing device, which comprises: refrigeration cycle components, configured to perform refrigerant circulation under corresponding working conditions in response to a test start operation triggered by a user; a touch screen, configured to set parameters of the refrigeration cycle components, so that target parameters of the refrigeration cycle components are consistent with the set parameters; a core controller, configured to automatically acquire physical quantities corresponding to the refrigeration cycle components during the refrigerant circulation.

[0011] In a possible implementation of the present application, the refrigeration cycle components further comprise: a heating tank, configured to evaporate refrigerant into gaseous refrigerant with the target heat load; a condenser, configured to condense the gaseous refrigerant into liquid refrigerant; a liquid storage tank, configured to store the liquid refrigerant condensed by the condenser; a refrigerant pump, configured to deliver the liquid refrigerant in the liquid storage tank to the heating tank to perform refrigerant circulation under corresponding working conditions.

[0012] In addition, to achieve the above object, the present application also provides a storage medium, which is a computer readable storage medium, and a computer program is stored on the storage medium, and the computer program is executed by a processor to implement the steps of the refrigerant pump testing method as described above.

[0013] In addition, to achieve the above object, the present application also provides a computer program product, which comprises a computer program, and the computer program is executed by a processor to implement the steps of the refrigerant pump testing method as described above.

[0014] The one or more technical solutions provided in the application have at least the following technical effects: In response to a user-triggered test start operation, refrigerant circulation under corresponding working conditions is performed based on refrigeration cycle components in the refrigerant pump test device, wherein the working conditions of the refrigerant circulation are determined based on target working condition parameters of the refrigeration cycle components, and the target working condition parameters are determined based on target parameters set by the user in a touch screen. Based on a core controller of the refrigerant pump test device, physical quantities corresponding to each refrigeration cycle component during the refrigerant circulation process are automatically obtained, and the test results of the refrigerant pump test are determined based on the physical quantities.

[0015] Compared with the method for testing the refrigerant pump under corresponding working conditions by manually adjusting the working conditions and collecting data, in the application, the working condition parameters of the refrigeration cycle components are automatically adjusted based on the target parameters set on the touch screen, so that manual setting of the refrigeration cycle working condition parameters is not required. In the application, the physical quantities obtained by each sensor during the refrigerant circulation process are automatically obtained by the core controller, so that manual data collection is not required. Therefore, the parameter configuration of the refrigeration cycle components and the physical quantity collection during the refrigerant circulation process are automatically performed in the application, so that comprehensive working condition simulation can be performed during the refrigerant pump test. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present application and, together with the specification, serve to explain the principles of the application.

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained based on these drawings without creative labor.

[0018] Figure 1 The flowchart provided for the refrigerant pump test method embodiment one of the application; Figure 2 The first scene diagram provided for the refrigerant pump test method embodiment one of the application; Figure 3 The second scene diagram provided for the refrigerant pump test method embodiment one of the application; Figure 4 The third scene diagram provided for the refrigerant pump test method embodiment one of the application; Figure 5 The fourth scene diagram provided for the refrigerant pump test method embodiment one of the application; Figure 6 Flowchart provided for the second embodiment of the refrigerant pump test method of the present application; Figure 7 Module structure diagram of the refrigerant pump test device of the embodiment of the present application; Figure 8 Consent diagram for the data acquisition involved in the refrigerant pump test method in the embodiment of the present application.

[0019] The purposes, functional features and advantages of the present application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0020] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and do not limit the present application.

[0021] In order to better understand the technical solutions of the present application, the following will be described in detail in conjunction with the drawings of the specification and the specific embodiments.

[0022] It should be noted that the execution subject of the present embodiment can be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device, a refrigerant pump test device, etc. capable of realizing the above functions. The present embodiment and the following embodiments will be described taking the refrigerant pump test device as an example.

[0023] The development and production process of the refrigerant pump needs to test the performance and reliability of the pump, therefore, a refrigerant pump test device with data acquisition function is needed to test the performance and reliability of the pump under various working conditions. However, the current refrigerant pump test method usually adjusts the working condition and collects data manually, which can only simulate limited working conditions, resulting in incomplete simulation of working conditions during refrigerant pump testing. Moreover, the refrigerant pump test device that adjusts the working condition and collects parameters manually also has the problems of complex operation, low efficiency and inconvenience.

[0024] Based on this, the present embodiment provides a refrigerant pump test method, which will be described in detail with reference to Figure 1 , Figure 1 Flowchart of the first embodiment of the refrigerant pump test method of the present application.

[0025] In the present embodiment, the refrigerant pump test method comprises steps S10-S30: Step S10, in response to the user triggered test start operation, based on the refrigerant cycle components in the refrigerant pump test equipment, the refrigerant cycle under the corresponding working condition is carried out, wherein the working condition of the refrigerant cycle is determined based on the target working condition parameters of the refrigerant cycle components, and the target working condition parameters are determined based on the target parameters set by the user in the touch screen. The refrigerant cycle components are the components such as heating tank, throttling valve, condenser, liquid storage tank, refrigerant pump and pipeline in the refrigeration test equipment, which constitute a closed loop to realize the circulation flow of refrigerant. The working condition parameters are the key physical quantities such as temperature, pressure, flow, superheat, pump speed, valve opening, fan speed and other key physical quantities that need to be controlled in the test process, which are used to simulate a specific operating environment, and the target working condition parameters are the working condition values expected by the user. The connection relationship of the refrigerant cycle components can be referred to Figure 2 , Figure 2 The refrigerant cycle components, physical quantity test components and pipelines for connection are included in the refrigerant cycle components.

[0026] It can be understood that in the current refrigerant pump test, the working condition adjustment of the test device depends on manual adjustment of the valve and observation of the instrument, which needs to be tried repeatedly, resulting in complex operation, low efficiency and difficulty in accurately reproducing the target condition. The embodiment automatically converts the target parameters set by the user on the touch screen into working condition instructions executable by the control system, and automatically coordinates the cooperative action of each refrigerant cycle component by the core controller (PLC), so as to establish a refrigerant cycle meeting the preset condition. It can be referred to Figure 3 , Figure 3 The connection relationship between the touch screen, the refrigerant cycle components and the control components in the embodiment is shown.

[0027] The embodiment automatically controls the above, so that the user only needs to input the target parameters on the touch screen, and the system can automatically identify and drive the corresponding components to adjust the parameters, and quickly establish a refrigerant cycle meeting the set condition. Thus, the error caused by human intervention is reduced, the test preparation efficiency is improved, and the consistency and repeatability of the working condition between different tests are enhanced through automatic parameter adjustment.

[0028] In a possible implementation, the refrigerant cycle components include a heating tank, a condenser, a liquid storage tank, a refrigerant pump and a heater at the bottom of the heating tank, the target working condition parameters include a target heat load of the heating tank, a target fan speed of the condenser and a target pump speed of the refrigerant pump, and the specific implementation of the refrigerant cycle under the corresponding working condition based on the refrigerant cycle components in the refrigerant pump test equipment in response to the user triggered test start operation can also be: evaporate refrigerant into gaseous refrigerant with the target heat load in the heating tank based on the heater, and deliver the gaseous refrigerant to the condenser, condense the gaseous refrigerant into liquid refrigerant based on the condenser with the target fan speed, and store the liquid refrigerant into the liquid storage tank, and deliver the liquid refrigerant in the liquid storage tank to the heating tank based on the refrigerant pump with the target pump speed to carry out refrigerant circulation under the corresponding working condition.

[0029] It should be noted that the heating tank is a container that contains refrigerant and evaporates it through the heater, which is used to simulate the heat load in actual application. The refrigerant inside the heating tank absorbs heat and changes from liquid to gas. The condenser is a heat exchange device used to exchange heat between high-temperature high-pressure gaseous refrigerant and external air, so that the gaseous refrigerant releases heat and condenses into liquid. The liquid storage tank is used to store the liquid refrigerant after condensation.

[0030] The refrigerant pump is used to deliver the liquid refrigerant from the liquid storage tank to the inlet of the heating tank and provide the necessary head, and its speed can be adjusted by the frequency converter. The heater is an electric heating element installed at the bottom of the heating tank, which is used to adjust the heating power by controlling the on-off duty cycle, so as to simulate different sizes of heat load.

[0031] It can be understood that in the conventional refrigerant pump test device, the parameters such as heat load, condensation condition and pump speed cannot be comprehensively simulated. Even if the simulation is carried out, it needs to rely on manual adjustment of valve opening, observation of pressure gauge or manual start-stop of equipment to realize, and the adjustment process is relatively slow and the accuracy is poor. It is difficult to coordinate control of multiple variables to achieve the preset working condition.

[0032] Therefore, the present embodiment adjusts the parameters of the refrigeration cycle components set by the user to the target heat load, the target fan speed and the target pump speed set by the user through PLC, and adjusts the parameters of the above-mentioned multiple components, so that the test device can more realistically simulate the complex working condition under the actual application scene, improve the accuracy of the test data, and at the same time, through the automatic and accurate parameter adjustment, the test efficiency and the working condition simulation ability are also improved.

[0033] In an embodiment, the refrigeration cycle components further comprise a first throttling valve between the refrigerant pump and the heating tank, and a second throttling valve between the heating tank and the condenser, the target parameters further comprise a target superheat degree of the heating tank and a target pipe resistance of the gas pipe, and the specific embodiment before the step of evaporating refrigerant into gaseous refrigerant with the target heat load in the heating tank based on the heater in response to the user triggered test start operation can be: In response to the user's parameter setting operation, the target heat load, the target superheat, the target fan speed and the target pump speed of the refrigeration cycle component are determined; based on the target heat load, the on-off duty cycle of the relay connected to the heater is adjusted; based on the target superheat, the opening of the first throttle valve is adjusted; based on the target pipe resistance, the opening of the second throttle valve is adjusted; based on the target pump speed, the first inverter corresponding to the refrigerant pump is adjusted; based on the target fan speed, the second inverter corresponding to the condenser is adjusted.

[0034] It should be noted that the second throttle valve can simulate different resistances in the system gas pipeline by adjusting its opening. The smaller the opening, the lower the resistance. The condensing fan can control the condensing pressure by adjusting its speed. The lower the fan speed, the higher the condensing pressure. The first throttle valve can adjust the flow rate entering the heating tank by adjusting its opening, thereby controlling the superheat at the heating tank outlet and ensuring complete evaporation of the refrigerant. The larger the valve opening, the lower the superheat. The refrigerant pump adjusts the speed by adjusting the frequency of the connected first inverter, thereby controlling the head. The higher the speed, the greater the head. The heater can control the load size by adjusting the duty cycle of the connected relay. The greater the duty cycle, the greater the load.

[0035] It can be understood that this embodiment uses corresponding control components to set separate conditions for each parameter in the working condition simulation process, preventing the adjustment of a single parameter from affecting the simulation of the global working condition, thereby improving the flexibility, accuracy and repeatability of the working condition adjustment.

[0036] In one embodiment, in order to test the refrigerant pump more conveniently, the Figure 4 The simple test device shown, Figure 4 It includes a device for testing refrigerant pumps without simulated load. During the test, the speed of the refrigerant pump can be adjusted by the frequency converter, and the pressure difference between the pump inlet and outlet can be controlled by the opening of the throttle valve to achieve different head adjustments, thereby testing the flow rate and head curve of the pump at various speeds. The control system of the above simple test system is as follows: Figure 5 As shown, Figure 5 It shows the connection relationship between the touch screen, PLC and various control components in the above-mentioned simple test device.

[0037] Step S20, automatically obtaining physical quantities corresponding to each of the refrigeration cycle components during the refrigerant circulation process based on the core controller of the refrigerant pump testing equipment; It should be noted that the core controller (PLC) is responsible for obtaining sensor data, executing control logic, sending control instructions, and other operations of the refrigerant pump testing device of this embodiment. It is the core hardware for realizing automatic acquisition and control of this embodiment.

[0038] The physical quantity is a measurable parameter reflecting the running state of the system, mainly including temperature data such as inlet and outlet temperatures of the heating tank, inlet and outlet temperatures of the condenser; pressure data such as pump inlet pressure P1, pump outlet pressure P2, condensing pressure, evaporating pressure; pump outlet volume flow data measured by a flow meter; actual running speed data of the refrigerant pump and actual running speed data of the condenser fan; power data such as heater power and pump input power; actual opening degree feedback data of the first and second throttles; In the traditional test process of the refrigerant pump, the acquisition of the physical quantity depends on manual reading of instrument data such as pressure gauges, thermometers and flow meters, which is time-consuming and laborious, and has problems such as reading error, recording delay, and asynchronous data, making it difficult to realize continuous, multi-point and high-frequency data acquisition.

[0039] Therefore, the embodiment automatically acquires the physical quantity of each key component in the refrigeration cycle process through the PLC, realizing automatic acquisition of test data. Through the above data automatic acquisition operation, subjective errors and time delays caused by manual reading can be avoided, and the accuracy and reliability of the data are significantly improved; by directly acquiring the corresponding data through the core controller, the key performance indicators such as the lift of the pump can be calculated in real time, and the corresponding test curve and report can be generated, thereby greatly improving the test efficiency and test accuracy.

[0040] Step S30, determining a test result of the refrigerant pump test based on the physical quantity.

[0041] It should be noted that the test result of the refrigerant pump in the embodiment includes a lift curve between the lift of the refrigerant pump and the flow rate of the refrigerant pump at different speeds.

[0042] In a possible implementation, the physical quantity includes the inlet pressure of the refrigerant pump, the outlet pressure of the refrigerant pump and the flow rate of the refrigerant pump, and the specific implementation of determining the test result of the refrigerant pump test based on the physical quantity can also be: Based on the inlet pressure and the outlet pressure, the corresponding refrigerant pump lift is calculated, the mapping relationship between the refrigerant pump lift and the refrigerant pump flow rate at the target pump speed is determined, and the test result of the refrigerant pump test is determined based on the mapping relationship.

[0043] It should be noted that the inlet pressure is the refrigerant pressure at the inlet of the refrigerant pump, which is used to reflect the suction condition of the pump. The outlet pressure is the refrigerant pressure at the outlet of the refrigerant pump, which is used to reflect the output pressure capacity of the pump. The refrigerant pump flow is the volume or mass flow of refrigerant passing through the pump per unit time, which is measured in real time by a flow meter installed in the pump outlet or pipeline, and is used to evaluate the delivery capacity of the pump. The refrigerant pump head refers to the energy increment obtained by unit weight of refrigerant flowing through the pump, which is used to measure the lifting capacity of the refrigerant pump. The mapping relationship is the functional relationship between the head and the flow of the pump at a certain fixed speed, which reflects the working characteristics of the pump under different loads.

[0044] It can be understood that in the traditional refrigerant pump test process, the test results often depend on manual determination, and it is impossible to judge in real time whether the refrigerant pump test under the current working condition meets the standard or whether the working condition needs to be adjusted.

[0045] The embodiment is based on the inlet pressure, the outlet pressure and the flow to calculate the head of the refrigerant pump, and automatically establish the head-flow mapping relationship under the target pump speed, so as to automatically draw a complete head-flow curve under the same target speed according to multiple stable working condition points, intuitively display the trend of the head of the pump changing with the flow, and facilitate real-time judgment of the working stability of the refrigerant pump, the maximum head point, the rated working point and the high efficiency range, thereby improving the effectiveness of the refrigerant pump test.

[0046] In summary, the embodiment responds to the test start operation triggered by the user, performs refrigerant circulation under the corresponding working condition based on the refrigeration cycle components in the refrigerant pump test equipment, wherein the working condition of the refrigerant circulation is determined based on the target working condition parameters of the refrigeration cycle components, and the target working condition parameters are determined based on the target parameters set in the touch screen by the user, automatically obtains the physical quantities corresponding to each refrigeration cycle component in the refrigerant circulation process based on the core controller of the refrigerant pump test equipment, and determines the test results of the refrigerant pump test based on the physical quantities.

[0047] Compared with the method of adjusting the working condition and collecting data manually to test the refrigerant pump under the corresponding working condition, the working condition parameters of the refrigeration cycle components in the embodiment are automatically adjusted based on the target parameters set on the touch screen, so that manual setting of the refrigeration cycle working condition parameters is not required. In the process of refrigerant circulation, the physical quantities obtained by each sensor are automatically obtained by the core controller, so that manual data collection is not required. Therefore, the embodiment automatically configures the parameters of the refrigeration cycle components and collects the physical quantities in the process of refrigeration circulation, so that comprehensive working condition simulation can be performed during the refrigerant pump test.

[0048] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as the above embodiment one can refer to the above introduction, and the subsequent will not be described. On this basis, please refer to Figure 6 , the refrigerant pump test also includes an automatic test, and the steps S10 of the refrigerant pump test method also include steps S100-S200: Step S100, in response to a user triggered automatic test operation, determining the minimum pump speed, the maximum pump speed, the pump speed interval, the minimum head, the maximum head and the head interval of the automatic test; It should be noted that the minimum pump speed is the lowest speed at which the refrigerant pump will run during the automatic test, which is used to simulate a light load or low load operating state. The maximum pump speed is the highest speed at which the refrigerant pump will run during the automatic test, which is used to evaluate the limit performance of the pump. The pump speed interval is the incremental step size of the pump speed between adjacent two test points, which is used to scan test the performance of the refrigerant pump under different speed conditions. The minimum head is the lowest pressure difference target set by the system at a certain speed, which is used to represent the minimum pipeline resistance that the pump needs to overcome. The maximum head is the highest pressure difference target set by the system at a certain speed, which is used to represent the maximum system resistance that the pump needs to overcome. The head interval is the incremental step size between adjacent two head test points, which realizes the scanning test of different head conditions.

[0049] It can be understood that the conventional refrigerant pump test method can usually only manually complete the test of a few fixed working condition points, and it is difficult to systematically obtain the performance curve of the pump in the entire working range, and the repeatability is poor and the efficiency is low. Therefore, by setting the speed and head range and step size parameters of the refrigerant pump, the continuous test of multiple speed and multiple head combinations can be completed without manual intervention, thereby effectively improving the efficiency of the refrigerant pump test.

[0050] Step S200, based on the minimum head, the maximum head, the head interval and the refrigeration cycle component, sequentially performing refrigerant circulation under corresponding working conditions from the maximum pump speed to the minimum pump speed, and automatically acquiring and saving the corresponding physical quantities of each refrigeration cycle component during the refrigerant circulation based on the core controller, wherein the current pump speed of the refrigerant pump is reduced based on the pump speed interval after saving the physical quantity each time.

[0051] In a possible implementation, the specific implementation of sequentially performing refrigerant circulation under corresponding working conditions from the minimum pump speed to the maximum pump speed based on the minimum head, the maximum head, the head interval and the refrigeration cycle component, and automatically acquiring and saving the corresponding physical quantities of each refrigeration cycle component during the refrigerant circulation based on the core controller, can also be: During each pump speed test of the refrigerant pump, based on the current pump speed and the refrigeration cycle components, the refrigerant circulation under the corresponding working conditions is performed in sequence from the minimum head to the maximum head, and based on the core controller, the corresponding physical quantities of each refrigeration cycle component in the refrigerant circulation process are automatically obtained and saved, wherein the current head of the refrigerant pump is increased based on the head interval after each saving of the physical quantity.

[0052] It is understandable that in traditional refrigerant pump testing, the tester needs to manually adjust parameters such as the pump speed and head, wait for the system to stabilize, record data, and then manually change the operating conditions. The above-mentioned testing process is relatively cumbersome and prone to errors, and it is difficult to ensure stability and consistency between the various test points. Therefore, this embodiment follows a preset test path, starting from the highest speed, gradually reducing the pump speed, completing a complete test from minimum to maximum head at each speed level, and automatically collecting and saving key physical quantities at each stable operating point. The above-mentioned continuous testing process ensures the integrity and accuracy of the test data, avoiding omissions or errors caused by human operation. In addition, during the above-mentioned automatic testing process, this embodiment analyzes the data, automatically draws the flow-head curves at different speeds, realizes automatic testing of different refrigerant pump speeds and different refrigerant pump head combinations, conducts a comprehensive refrigerant pump test operating condition simulation, and effectively improves the test efficiency of the refrigerant pump.

[0053] In one embodiment, the core controller stores a preset test safety threshold. During the refrigerant pump test, the core controller (such as a PLC) can monitor in real time whether the key physical quantity exceeds the test safety threshold. If the test safety threshold is exceeded, the refrigerant pump test is stopped according to a preset processing method, or the parameters of the corresponding test component that exceeds the safety threshold are adjusted.

[0054] Specifically, this embodiment can perform corresponding automatic control processing based on the type of physical quantity that exceeds the safety threshold, as well as the numerical value that exceeds the safety threshold. If the outlet pressure of the refrigerant pump is too high, the PLC can automatically reduce the speed of the refrigerant pump by adjusting the frequency of the first inverter, or increase the opening of the first throttle valve to reduce the system resistance; if the superheat is too high, the PLC can automatically increase the opening of the first throttle valve to increase the flow of liquid refrigerant entering the heating tank. If there is a serious overpressure, motor overcurrent, low liquid level or temperature exceeding the limit, which may cause equipment damage or safety hazards, the PLC will immediately execute the emergency shutdown procedure: stop the refrigerant pump, cut off the power supply to the heater, close the key throttle valve to isolate the system, etc. At the same time, an alarm message will pop up on the touch screen, and the sound and light alarm device will be activated to prompt the operator to check the cause of the fault.

[0055] In an embodiment, the automatic test of the refrigerant pump can further include a dynamic load test, specifically including: in response to a user-triggered dynamic load simulation operation, the core controller periodically adjusts the second throttle valve based on preset dynamic load simulation settings, thereby applying a periodically changing gas pipeline resistance. The core controller automatically acquires physical quantities during the test process of the periodic change of the gas pipeline resistance, and automatically draws a flow-head curve of the refrigerant pump under different gas pipeline resistances based on the acquired physical quantities.

[0056] It can be understood that the current method only focuses on the steady-state performance of the refrigerant pump and cannot simulate the real dynamic environment. The embodiment simulates the transient pressure disturbance caused by load fluctuation, valve opening and closing or environmental change in the actual operation of the refrigerant system by actively and periodically dynamically adjusting the gas pipeline resistance through the second throttle valve, thereby highly approaching the dynamic working condition environment of the real application. Since the performance of the refrigeration pump during operation is affected by multiple factors and is prone to fluctuation, the data acquired by the test process of the embodiment can be used to evaluate the running stability, anti-cavitation ability and robustness of the control system of the pump.

[0057] In an embodiment, during the dynamic load simulation process, the core controller further adjusts the speed of the refrigerant pump through the first frequency converter in reverse phase based on the periodic adjustment of the second throttle valve, that is, when the opening of the second throttle valve decreases, the speed of the pump is temporarily increased to maintain the stability of the system pressure; when the opening of the valve increases, the speed of the pump is correspondingly reduced.

[0058] It can be understood that the current test method usually only performs static test or single-variable disturbance, so that the working condition simulation is not comprehensive enough. Therefore, the embodiment constructs a highly realistic dynamic working condition through the reverse phase coordinated disturbance between the second throttle valve and the speed of the refrigerant pump, simulates the dynamic change process of the mutual influence between the pump and the pipeline resistance when the load suddenly changes in the actual refrigeration system, and thereby realizes comprehensive simulation of the dynamic change working condition.

[0059] In summary, in response to a user-triggered automatic test operation, the embodiment determines the minimum pump speed, the maximum pump speed, the pump speed interval, the minimum head, the maximum head and the head interval of the automatic test, performs refrigerant circulation under corresponding working conditions from the maximum pump speed to the minimum pump speed based on the minimum head, the maximum head, the head interval and the refrigeration cycle components, and automatically acquires and saves the corresponding physical quantities of each refrigeration cycle component during the refrigerant circulation process based on the core controller, wherein the current pump speed of the refrigerant pump is reduced based on the pump speed interval after saving the physical quantities each time.

[0060] The embodiment performs automatic testing of the refrigerant pump at multiple rotating speeds and multiple lifts by presetting the rotating speed and lift range and the adjusting step by the user, and automatically collects and saves the key physical quantities after stabilization at each working condition point by the core controller. The embodiment ensures the completeness and accuracy of the test data through the above-mentioned continuous testing process, and avoids omissions or errors caused by manual operation. And in the process of the above-mentioned automatic testing, the embodiment automatically analyzes the data and automatically draws the flow-lift curve at different rotating speeds, realizes the comprehensive refrigerant pump test working condition simulation at different rotating speeds and different lifts, and effectively improves the test efficiency of the refrigerant pump.

[0061] It should be noted that the above examples are only for understanding the present application and do not constitute a limitation on the refrigerant pump test method of the present application. More forms of simple transformation based on this technical concept are within the protection scope of the present application.

[0062] The present application also proposes a refrigerant pump test device, which comprises: A refrigeration cycle component for performing refrigerant circulation under corresponding working conditions in response to a test start operation triggered by a user; A touch screen for setting parameters of the refrigeration cycle component, so that the target parameters of the refrigeration cycle component are consistent with the set parameters; A core controller for automatically acquiring physical quantities corresponding to each refrigeration cycle component during the refrigeration cycle.

[0063] In a possible implementation of the present application, the refrigeration cycle component further comprises: A heating tank for evaporating refrigerant into gaseous refrigerant with the target heat load; A condenser for condensing the gaseous refrigerant into liquid refrigerant; A liquid storage tank for storing the liquid refrigerant condensed by the condenser; A refrigerant pump for delivering the liquid refrigerant in the liquid storage tank to the heating tank to perform refrigerant circulation under corresponding working conditions.

[0064] The present application also provides a refrigerant pump test device, please refer to Figure 7 , the refrigerant pump test device comprises: A cycle simulation module 10 for performing refrigerant circulation under corresponding working conditions based on the refrigeration cycle components in the refrigerant pump test device in response to a test start operation triggered by a user, wherein the working conditions of the refrigeration cycle are determined based on the target working condition parameters of the refrigeration cycle components, and the target working condition parameters are determined based on the target parameters set in the touch screen by the user; The physical quantity acquisition module 20 is configured to automatically acquire the physical quantity corresponding to each refrigeration cycle component in the refrigerant circulation process based on the core controller of the refrigerant pump test device. The result determination module 30 is configured to determine the test result of the refrigerant pump test based on the physical quantity.

[0065] In an embodiment, the cycle simulation module further comprises: The heat load simulation submodule is configured to, in response to a user-triggered test start operation, evaporate refrigerant in the heating tank into gaseous refrigerant with the target heat load based on the heater, and deliver the gaseous refrigerant to the condenser. The condensation simulation submodule is configured to condense the gaseous refrigerant into liquid refrigerant based on the condenser with the target fan speed, and store the liquid refrigerant into the liquid storage tank. The refrigerant pump operation simulation submodule is configured to deliver the liquid refrigerant in the liquid storage tank to the heating tank based on the refrigerant pump with the target pump speed, to perform refrigerant circulation under the corresponding working condition.

[0066] In an embodiment, the cycle simulation module further comprises: The parameter determination submodule is configured to, in response to a user-triggered automatic test operation, determine the minimum pump speed, the maximum pump speed, the pump speed interval, the minimum head, the maximum head, and the head interval of the automatic test. The speed test submodule is configured to, based on the minimum head, the maximum head, the head interval, and the refrigeration cycle component, sequentially perform refrigerant circulation under the corresponding working condition from the maximum pump speed to the minimum pump speed, and automatically acquire and save the physical quantity corresponding to each refrigeration cycle component in the refrigerant circulation process based on the core controller, wherein the current pump speed of the refrigerant pump is reduced based on the pump speed interval after each saving of the physical quantity.

[0067] In an embodiment, the speed test submodule further comprises: The head test unit is configured to, in each pump speed test process of the refrigerant pump, based on the current pump speed and the refrigeration cycle component, sequentially perform refrigerant circulation under the corresponding working condition from the minimum head to the maximum head, and automatically acquire and save the physical quantity corresponding to each refrigeration cycle component in the refrigerant circulation process based on the core controller, wherein the current head of the refrigerant pump is increased based on the head interval after each saving of the physical quantity.

[0068] In an embodiment, the result determination module further comprises: a head calculation submodule, configured to calculate a corresponding refrigerant pump head based on the inlet pressure and the outlet pressure; a mapping determination submodule, configured to determine a mapping relationship between the refrigerant pump head and the refrigerant pump flow at the target pump rotating speed; a result determination submodule, configured to determine a test result of the refrigerant pump test based on the mapping relationship.

[0069] The refrigerant pump test device provided in the application can solve the technical problem of incomplete simulation of working conditions in refrigerant pump testing by adopting the refrigerant pump test method in the above embodiments. Compared with the prior art, the refrigerant pump test device provided in the application has the same beneficial effects as the refrigerant pump test method provided in the above embodiments, and other technical features in the refrigerant pump test device are the same as the features disclosed in the above embodiments, which will not be described here.

[0070] The application provides a computer readable storage medium having computer readable program instructions (i.e. computer programs) stored thereon, the computer readable program instructions being used to execute the refrigerant pump test method in the above embodiments.

[0071] The computer readable storage medium provided in the application may, for example, be a U disk, but is not limited to an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, system or device, or any combination of the above. More specific examples of the computer readable storage medium can include, but are not limited to, an electrical connection having one or more conductive wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present embodiment, the computer readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system or device. The program code contained on the computer readable storage medium can be transmitted by any suitable medium, including but not limited to: electrical wires, optical cables, RF (Radio Frequency: radio frequency), etc., or any suitable combination of the above.

[0072] The above computer readable storage medium can be included in the refrigerant pump test device; or can exist separately without being assembled into the refrigerant pump test device.

[0073] The computer readable storage medium described above carries one or more programs, when the one or more programs are executed by the refrigerant pump testing device, the refrigerant pump testing device is caused to: execute the refrigerant pump testing method described above.

[0074] Computer program code for carrying out operations of the present application can be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code can execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the latter scenario, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection can be made to an external computer (for example, through the Internet using an Internet Service Provider).

[0075] The flow diagrams and the block diagrams in the drawings are illustrations of possible architectures, functions, and operations for systems, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flow diagrams or block diagrams can represent a module, a segment, or a portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that in some alternative implementations, the functions noted in the blocks can occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and / or flow diagrams, and combinations thereof, can be implemented by special purpose hardware-based systems that perform the specified functions or operations, or combinations of special purpose hardware and computer instructions.

[0076] The modules involved in the embodiments of the present application can be implemented in software or in hardware. In some cases, the name of the module does not constitute a limitation on the module itself.

[0077] The readable storage medium provided by the application is a computer readable storage medium, which stores computer readable program instructions (i.e. computer programs) for executing the above-mentioned refrigerant pump test method, and can solve the technical problem of incomplete simulation of working conditions of refrigerant pump test. Compared with the prior art, the computer readable storage medium provided by the application has the same beneficial effects as the refrigerant pump test method provided by the above-mentioned embodiments, and will not be repeated here.

[0078] The application also provides a computer program product comprising a computer program, which, when executed by a processor, implements the steps of the above-mentioned refrigerant pump test method.

[0079] The computer program product provided by the application can solve the technical problem of incomplete simulation of working conditions of refrigerant pump test. Compared with the prior art, the computer program product provided by the application has the same beneficial effects as the refrigerant pump test method provided by the above-mentioned embodiments, and will not be repeated here.

[0080] The user-related data (for example, user attribute data, user behavior data, and user geographic location, etc., the data types herein should be adaptively modified according to the scheme content) involved in the application are obtained after obtaining the user's permission or consent; that is, when the application is applied to a specific product or technology, the user's permission is required to realize the acquisition and processing of related data, and the processing of related data needs to comply with relevant laws, regulations and regulatory standards of relevant countries and regions. For example, refer to Figure 8 When the current geographic location of the user needs to be acquired, a location acquisition prompt can be displayed in the terminal of the user, and after receiving the confirmation operation of the user for the location acquisition prompt, the terminal can acquire the current geographic location of the user.

[0081] The above-mentioned is only part of the embodiments of the application, and does not limit the protection scope of the application, and any equivalent structural transformation made by using the content of the application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the application.

Claims

1. A refrigerant pump testing apparatus characterized by, The refrigerant pump test equipment comprises: A refrigeration cycle component for performing refrigerant circulation under corresponding working conditions in response to a user-triggered test start operation; A touch screen for setting parameters of the refrigeration cycle component, so that target parameters of the refrigeration cycle component are consistent with the set parameters; A core controller for automatically acquiring physical quantities corresponding to each refrigeration cycle component during the refrigerant circulation.

2. The refrigerant pump testing apparatus of claim 1, wherein, The refrigeration cycle component further comprises: A heating tank for evaporating refrigerant into gaseous refrigerant with a target heat load; A condenser for condensing the gaseous refrigerant into liquid refrigerant; A liquid storage tank for storing the liquid refrigerant condensed by the condenser; A refrigerant pump for delivering the liquid refrigerant in the liquid storage tank to the heating tank to perform refrigerant circulation under corresponding working conditions.

3. A refrigerant pump testing method characterized by, The method applied to the refrigerant pump test equipment comprises: In response to a user-triggered test start operation, performing refrigerant circulation under corresponding working conditions based on refrigeration cycle components in the refrigerant pump test equipment, wherein the working conditions of the refrigerant circulation are determined based on target working condition parameters of the refrigeration cycle components, and the target working condition parameters are determined based on target parameters set by the user in the touch screen; Based on a core controller of the refrigerant pump test equipment, automatically acquiring physical quantities corresponding to each refrigeration cycle component during the refrigerant circulation; Based on the physical quantities, determining test results of the refrigerant pump test.

4. The method of claim 3, wherein, The refrigeration cycle component comprises a heating tank, a condenser, a liquid storage tank, a refrigerant pump, and a heater at the bottom of the heating tank, the target working condition parameters comprise a target heat load of the heating tank, a target fan speed of the condenser, and a target pump speed of the refrigerant pump, and the step of performing refrigerant circulation under corresponding working conditions based on refrigeration cycle components in the refrigerant pump test equipment in response to a user-triggered test start operation comprises: In response to a user-triggered test start operation, based on the heater, evaporating refrigerant into gaseous refrigerant with a target heat load in the heating tank, and delivering the gaseous refrigerant to the condenser; Based on the condenser with the target fan speed, condensing the gaseous refrigerant into liquid refrigerant, and storing the liquid refrigerant in the liquid storage tank; Based on the refrigerant pump with the target pump speed, delivering the liquid refrigerant in the liquid storage tank to the heating tank to perform refrigerant circulation under corresponding working conditions.

5. The method of claim 3, wherein, The refrigerant pump test further comprises automatic testing, and the step of performing refrigerant circulation under corresponding working conditions based on refrigeration cycle components in the refrigerant pump test equipment in response to a user-triggered test start operation further comprises: In response to a user-triggered automatic test operation, determining a minimum pump speed, a maximum pump speed, a pump speed interval, a minimum head, a maximum head, and a head interval of the automatic test; based on the minimum lift, the maximum lift, the lift interval and the refrigeration cycle components, sequentially performing refrigerant circulation under corresponding working conditions from the maximum pump speed to the minimum pump speed, and based on the core controller, automatically acquiring and saving corresponding physical quantities of each refrigeration cycle component during the refrigerant circulation process, wherein the current pump speed of the refrigerant pump is reduced based on the pump speed interval after each saving of the physical quantities.

6. The method of claim 5, wherein, The step of sequentially performing refrigerant circulation under corresponding working conditions from the minimum pump speed to the maximum pump speed based on the minimum lift, the maximum lift, the lift interval and the refrigeration cycle components, and automatically acquiring and saving corresponding physical quantities of each refrigeration cycle component during the refrigerant circulation process based on the core controller, comprises: During each pump speed test of the refrigerant pump, sequentially performing refrigerant circulation under corresponding working conditions from the minimum lift to the maximum lift based on the current pump speed and the refrigeration cycle components, and automatically acquiring and saving corresponding physical quantities of each refrigeration cycle component during the refrigerant circulation process based on the core controller, wherein the current lift of the refrigerant pump is increased based on the lift interval after each saving of the physical quantities.

7. The method of claim 3, wherein, The physical quantities include the inlet pressure of the refrigerant pump, the outlet pressure of the refrigerant pump and the refrigerant pump flow, and the step of determining the test result of the refrigerant pump test based on the physical quantities comprises: calculating the corresponding refrigerant pump lift based on the inlet pressure and the outlet pressure; determining the mapping relationship between the refrigerant pump lift and the refrigerant pump flow at the target pump speed; determining the test result of the refrigerant pump test based on the mapping relationship.

8. A refrigerant pump testing apparatus characterized by comprising: The device comprises: a circulation simulation module configured to, in response to a test start operation triggered by a user, perform refrigerant circulation under corresponding working conditions based on refrigeration cycle components in the refrigerant pump test device, wherein the working conditions of the refrigerant circulation are determined based on target working condition parameters of the refrigeration cycle components, and the target working condition parameters are determined based on target parameters set by the user in a touch screen; a physical quantity acquisition module configured to automatically acquire corresponding physical quantities of each refrigeration cycle component during the refrigerant circulation based on a core controller of the refrigerant pump test device; a result determination module configured to determine a test result of the refrigerant pump test based on the physical quantities.

9. A storage medium, characterized by The storage medium is a computer-readable storage medium, and the storage medium stores a computer program. The computer program is executed by a processor to implement the steps of the refrigerant pump test method according to any one of claims 3 to 7.

10. A computer program product, characterised in that, The computer program product comprises a computer program, and the computer program is executed by a processor to implement the steps of the refrigerant pump test method according to any one of claims 3 to 7.

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